If flying is your hobby and it scares you so much, why not try something else ? Lawn bowling, ballroom dancing or even train spotting?
The OP has asked a genuine question. You may be arrogant/brave/stupid enough to be never afraid of anything but that's not how it works for everyone. In my book people who conquer fear are the better ones. On my part various things in flying made me nervous (first solo, IR test etc) but I did them and I'm glad I did.